Lining plate of female die cover plate

By designing the die cover plate liner, the problem of the single structure of the die in the rotary tablet press was solved, enabling diversified powder molding and extending service life, while reducing the risk of wear.

CN224197388UActive Publication Date: 2026-05-05JUNTUO (BAZHOU) MASCH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JUNTUO (BAZHOU) MASCH TECH CO LTD
Filing Date
2025-04-22
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

The existing rotary tablet press has a fixed die structure, which limits it to only being able to press and form powders with a single structure, thus having strong limitations and failing to meet diverse needs.

Method used

A die cover plate liner was designed, including components such as die body, bottom support ring, inner liner plate, and top ring cover. Through the interlocking and limiting structure of multiple sets of inner liner plates, the inner periphery of the die body is protected and diversified stamping is achieved. Combined with a wear-resistant layer, the service life is improved.

Benefits of technology

It enables diverse stamping forming of the inner periphery of the die cavity, improves service life and stability, facilitates disassembly and replacement, and reduces the risk of wear.

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Abstract

The utility model relates to the technical field of female dies, in particular to a female die cover plate lining plate which comprises a female die body, a bottom supporting ring used for limiting is installed on the surface of the bottom end of the female die body in a screwed mode, a bearing groove is formed in the surface of the top end of the bottom supporting ring, a plurality of sets of lining plates matched with the bearing groove are connected to the inner side of the female die body in a clamped mode, and the lining plates are arranged in the bearing groove. A threaded groove is formed in the surface of the top end of the female die body. In the process of using the female die in the rotary powder forming machine, the multiple sets of lining plates can be matched with one another, inserted into the female die body and matched with the bearing groove in the top of the bottom supporting ring, and the top ring cover is used for collecting and limiting the lining plates, so that punched holes in the inner periphery of the female die body can be protected through the lining plates, and the service life of the inner lining plates is prolonged. And meanwhile, disassembly and assembly are convenient, lining plates with different structures can be conveniently installed on the inner periphery of the female die body, powder can be punched into different shapes, the diversity of the functions of the female die body is improved, and the service life of the female die body in the using process is conveniently prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of concave mold technology, and specifically to a concave mold cover plate liner. Background Technology

[0002] A rotary tablet press is an automatic, continuous tableting device. It is a fundamental piece of equipment in the pharmaceutical, chemical, and food industries for compressing various granular raw materials into tablets. The formation of a complete tablet requires a series of processes, and the successful completion of this entire process is inseparable from the coordinated operation of all components of the rotary tablet press. The die of a rotary tablet press refers to the mold portion installed on the press, used to compress granular materials into tablets. However, in the use of rotary powder forming machines, the internal structure of the die is generally fixed, limiting its ability to press and form powders with individual shapes or structures, which is quite restrictive. Therefore, we propose a die cover plate liner. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides a concave mold cover plate liner.

[0004] The technical solution adopted by this utility model to solve its technical problem is a concave mold cover plate liner, including a concave mold body. A bottom support ring for limiting is screwed onto the bottom surface of the concave mold body, and a receiving groove is opened on the top surface of the bottom support ring. An inner liner plate that fits into the receiving groove is snapped into the inner side of the concave mold body, and there are multiple sets of inner liner plates. A threaded groove is opened on the top surface of the concave mold body, and a top ring cover that fits into the inner support plate is screwed into the threaded groove.

[0005] The bottom surface of the top ring cover is provided with a ring groove for limiting the position, and the outer circumferential surface of the inner liner plate is integrally constructed with a semi-circular body that fits into the ring groove. The inner circumferential surface of the threaded groove is provided with a ring groove, and a C-shaped spring ring that engages with the top ring cover is engaged in the ring groove.

[0006] By adopting the above technical solution, during the use of the die in the rotary powder forming machine, multiple sets of inner liner plates can be used to fit together and insert into the inside of the die body. At the same time, they fit together with the receiving groove on the top of the bottom support ring, and the top ring cover is used to tighten and limit them. This allows the inner liner plates to not only protect the punching holes on the inner periphery of the die body, but also to facilitate disassembly and assembly. This allows inner liner plates with different structures to be easily installed on the inner periphery of the die body, enabling the powder to be stamped into different shapes, improving the versatility of the die body's functions, and facilitating the extension of the die body's service life.

[0007] When using the top ring cover to tighten and limit multiple sets of interlocking inner liner plates, the groove at the bottom of the top ring cover can engage with the semi-circular body of the outer periphery of the inner liner plate, allowing the top ring cover to form a whole with the multiple sets of inner liner plates. This enables the inner liner plates to operate more stably and provides convenient and stable protection for the die body. Furthermore, the C-shaped spring ring inside the ring groove of the threaded groove can easily engage with the top ring cover, facilitating the limiting of the top ring cover and improving the stability of the connection between the top ring cover and the threaded groove. This allows the top ring cover to tighten and limit the inner liner plates more stably, resulting in more stable operation of the inner liner plates.

[0008] Specifically, the outer peripheral surface of the top ring cover and the outer peripheral surface of the bottom support ring are provided with vertical holes, and there are multiple sets of vertical holes.

[0009] By adopting the above technical solution, the vertical holes on the outer periphery of the top ring cover and the outer periphery of the bottom support ring make them easy to disassemble and assemble, and easy to disassemble and replace according to the needs of use.

[0010] Specifically, inclined grooves are provided on the inner side of the outer peripheral opening end of the bottom support ring and the inner peripheral opening end of the inner lining plate.

[0011] By adopting the above technical solution, the openings on the outer periphery of the bottom support ring and the inner liner plate allow the punch on the rotary press to enter the cavity more smoothly, facilitating the stamping and forming of powder.

[0012] Specifically, a wear-resistant layer is provided on the outer peripheral surface of the die cavity.

[0013] By adopting the above technical solution, the wear-resistant layer on the outer periphery of the die body can protect the die body, thereby reducing the situation where the screws used to fix the die body rub against the die body and cause scratches and damage, so that the die body can operate more stably.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The technical solution of this application, through the design of a bottom support ring, receiving groove, inner liner plate, threaded groove, and top ring cover, allows multiple sets of inner liner plates to fit together and be inserted into the cavity of the cavity during the use of the die in a rotary powder forming machine. These inner liner plates also fit into the receiving groove on the top of the bottom support ring, and the top ring cover provides constriction and positioning. This not only protects the punched holes on the inner circumference of the cavity but also facilitates disassembly and assembly. This allows for the easy installation of inner liner plates with different structures on the inner circumference of the cavity, enabling the powder to be stamped into different shapes, increasing the versatility of the cavity's functions, and extending the service life of the cavity.

[0016] 2. The design of the ring groove, semi-ring body, annular groove, and C-shaped spring ring in this application allows the top ring cover to be used to tighten and limit multiple sets of interlocking inner liner plates. The ring groove at the bottom of the top ring cover can be interlocked with the semi-ring body on the outer periphery of the inner liner plate, enabling the top ring cover to form a whole with the multiple sets of inner liner plates. This allows the inner liner plates to operate more stably and provides convenient and stable protection for the die body. Furthermore, the C-shaped spring ring on the inner side of the annular groove in the threaded groove can easily engage with the top ring cover, facilitating the limiting of the top ring cover. This improves the stability of the connection between the top ring cover and the threaded groove, allowing the top ring cover to tighten and limit the inner liner plates more stably, thus enabling the inner liner plates to operate more stably. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an isometric view of the present invention;

[0019] Figure 2 This is a schematic diagram of the inner side structure of the concave mold body of this utility model;

[0020] Figure 3 This is a schematic diagram of the C-type spring coil structure of this utility model;

[0021] In the figure: 1. Cavity mold body; 2. Bottom support ring; 3. Receiving groove; 4. Inner liner plate; 5. Threaded groove; 6. Top ring cover; 7. Ring groove; 8. Half ring body; 9. Ring groove; 10. C-shaped spring ring; 11. Vertical hole; 12. Inclined groove; 13. Wear-resistant layer. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a concave mold cover plate liner, including a concave mold body 1, a bottom support ring 2 for limiting is screwed onto the bottom surface of the concave mold body 1, and a receiving groove 3 is opened on the top surface of the bottom support ring 2. An inner liner plate 4 that fits into the receiving groove 3 is snapped into the inner side of the concave mold body 1, and there are multiple sets of inner liner plates 4. A threaded groove 5 is opened on the top surface of the concave mold body 1, and a top ring cover 6 that fits into the inner support plate is screwed into the threaded groove 5. A ring groove 7 for limiting is opened on the bottom surface of the top ring cover 6, and a semi-ring body 8 that fits into the ring groove 7 is integrally constructed on the outer peripheral surface of the inner liner plate 4. A ring groove 9 is opened on the inner peripheral surface of the threaded groove 5, and a C-shaped spring ring 10 that fits into the top ring cover 6 is snapped into the ring groove 9.

[0024] In use, during the use of the die in the rotary powder forming machine, multiple sets of inner liner plates 4 can be used to fit together and insert into the inside of the die body 1. At the same time, they fit together with the receiving groove 3 on the top of the bottom support ring 2, and the top ring cover 6 is used to tighten and limit them. This allows the inner liner plates 4 to not only protect the punching holes on the inner circumference of the die body 1, but also to facilitate disassembly and assembly. This allows inner liner plates 4 with different structures to be easily installed on the inner circumference of the die body 1, so that the powder can be stamped into different shapes, improve the versatility of the functions of the die body 1, and facilitate the extension of the service life of the die body 1.

[0025] When the top ring cover 6 is used to tighten and limit the multiple sets of inner liner plates 4 that fit together, the groove 7 at the bottom of the top ring cover 6 can fit with the semi-circular body 8 on the outer periphery of the inner liner plate 4, so that the top ring cover 6 can form a whole with the multiple sets of inner liner plates 4. This allows the inner liner plate 4 to operate more stably and to protect the die body 1 more easily and stably. In addition, the C-shaped spring ring 10 on the inner side of the ring groove 9 in the threaded groove 5 can easily engage with the top ring cover 6, which helps to limit the top ring cover 6. This improves the stability when the top ring cover 6 and the threaded groove 5 are screwed together, so that the top ring cover 6 can tighten and limit the inner liner plate 4 more stably, thus allowing the inner liner plate 4 to operate more stably.

[0026] like Figure 1 and Figure 2 As shown, vertical holes 11 are provided on the outer peripheral surface of the top ring cover 6 and the outer peripheral surface of the bottom support ring 2, and there are multiple sets of vertical holes 11.

[0027] During use, the vertical holes 11 on the outer periphery of the top ring cover 6 and the vertical holes 11 on the outer periphery of the bottom support ring 2 make it easy to disassemble and assemble them, and facilitate disassembly and replacement according to the needs of use.

[0028] like Figure 1 and Figure 2 As shown, inclined grooves 12 are provided on the inner side of the outer opening end of the bottom support ring 2 and the inner side of the outer opening end of the inner lining plate 4.

[0029] When in use, the openings on the outer periphery of the bottom support ring 2 and the inner liner plate 4 allow the punch on the rotary press to enter the cavity 1 more smoothly, making it easier to press and form the powder.

[0030] like Figure 1 and Figure 2 As shown, a wear-resistant layer 13 is provided on the outer peripheral surface of the die body 1.

[0031] During use, the wear-resistant layer 13 on the outer periphery of the die body 1 can protect the die body 1, thereby reducing the possibility of scratches and damage caused by friction between the screws used to fix the die body 1 and the die body 1, so that the die body 1 can operate more stably.

[0032] The working principle and usage process of this utility model are as follows: In use, first, install the corresponding structural components in suitable positions. During the use of the die in the rotary powder forming machine, multiple sets of inner liner plates 4 can be interlocked and inserted into the die body 1, simultaneously engaging with the receiving groove 3 on the top of the bottom support ring 2. The top ring cover 6 is used to tighten and limit their movement. This allows the inner liner plates 4 to not only protect the punched holes on the inner circumference of the die body 1 but also facilitate disassembly and assembly. This allows inner liner plates 4 with different structures to be easily installed on the inner circumference of the die body 1, enabling the powder to be stamped into different shapes, increasing the functional versatility of the die body 1, and extending its service life. When the top ring cover 6 is used to tighten and limit the multiple sets of inner liner plates 4 that fit together, the groove 7 at the bottom of the top ring cover 6 can fit with the semi-circular body 8 on the outer periphery of the inner liner plate 4, so that the top ring cover 6 can form a whole with the multiple sets of inner liner plates 4. This allows the inner liner plate 4 to operate more stably and to protect the die body 1 more easily and stably. In addition, the C-shaped spring ring 10 on the inner side of the ring groove 9 in the threaded groove 5 can easily engage with the top ring cover 6, which helps to limit the top ring cover 6. This improves the stability when the top ring cover 6 and the threaded groove 5 are screwed together, so that the top ring cover 6 can tighten and limit the inner liner plate 4 more stably, thus allowing the inner liner plate 4 to operate more stably.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity mold cover plate liner, characterized in that, The device includes a concave mold body (1), a bottom support ring (2) for limiting is screwed onto the bottom surface of the concave mold body (1), and a receiving groove (3) is opened on the top surface of the bottom support ring (2). An inner liner plate (4) that fits into the receiving groove (3) is snapped into the inner side of the concave mold body (1), and there are multiple sets of inner liner plates (4). A threaded groove (5) is opened on the top surface of the concave mold body (1), and a top ring cover (6) that fits into the inner support plate is screwed into the threaded groove (5). The bottom surface of the top ring cover (6) is provided with a ring groove (7) for limiting the position, and the outer circumferential surface of the inner liner (4) is integrally constructed with a semi-circular body (8) that fits the ring groove (7). The inner circumferential surface of the threaded groove (5) is provided with a ring groove (9), and a C-shaped spring ring (10) that engages with the top ring cover (6) is engaged in the ring groove (9).

2. The cavity mold cover plate liner according to claim 1, characterized in that, The outer peripheral surface of the top ring cover (6) and the outer peripheral surface of the bottom support ring (2) are provided with vertical holes (11), and there are multiple sets of vertical holes (11).

3. The cavity mold cover plate liner according to claim 1, characterized in that, The inner side of the outer peripheral opening end of the bottom support ring (2) and the inner side of the outer peripheral opening end of the inner lining plate (4) are both provided with inclined grooves (12).

4. The cavity mold cover plate liner according to claim 1, characterized in that, The outer peripheral surface of the die body (1) is provided with a wear-resistant layer (13).